def fun(x):
    i = x ** 2
    return i


print(fun(10))


# 10 的阶乘

def f(i):
    # 退出条件
    if i == 1:
        return 1

    return f(i - 1) * i


print(f(10))

fun2 = lambda x, y: x + y

print(fun)
print(fun2(1, 2))
